Cooking-stove



R. J. 'BLANCHARD.

Cooking Stove.

Patented Aug. 24,.1852.

Ill

PETERs Phmw-Lin n hm Wauhinghm n. c.

UNITED S ATES R. J. BLANCHARD, OF ALBANY, NEW YORK.

COOKING-STOVE.

Specification of Letters Patent No. 9,212 dated August 24, 1852.

To all whom it may concern:

Be it known that I, REUBEN J. BLAN- CHARD, of the city of Albany andState of New York, have invented a new and useful Improvement in theConstruction of the Flues of Stoves; and I declare the followingspecification, with the drawings hereto annexed as part of the same, tobe a full and perfect description thereof.

Figure 1 represents a perspective view of a cooking stove with one sideand the top removed in order to show the interior ar-- rangement of thefines with my improvement. Fig. 2 represents an end view, showing across section of the stove in the line y, 0, 2, through the back fluesee Fig. 1.

From Fig. l the arrangements of the furnace and fines will be at onceunderstood. The flame and heated gases from the furnace A pass into theflue B lying between the top of the stove and the top plate of the ovenX, then down the front flue C between the front of the stove and thefront plate of the oven, then along the bottom flue D be tween thebottom of the stove, and the bottom plate of the oven, then up the backflue E between the back of the stove and the back plate of the ovenpassing out at the nozzle N.

Stoves have been constructed in which the heat has been conducted from afurnace placed similarly to the one above described, over a top fluethen through two corner flues, one being in each angle of the front ofthe stove, then through a bottom flue and up through a plain back flueto the exit nozzle situated as the one shown above. The result of thisarrangement has been that the front end of the oven has been deprived ofheat, over a large middle space, and also that the separated columns ofheated gases, after passing downward through the fines would 'keepseparated till they arrived near the back flue, thus depriving a largecentral portion of the bottom of the oven of the effect of the heat, andwhen the columns had united into the front and back flues, a separatorto divide the columns of heated gases during a portion of their descentand ascent in those flues. These separators are shown at a and b Fig. 1and 0 Fig. 2. They are plates of metal arranged like the sides, roof andfloor of a house as shown in profile in Fig. 2 and extending from theoutside plates of the stove to those of the oven. In width the apparatusoccupies about two-thirds of the space between the side plates of thestove, and in height about two thirds of the space between the top andbottom plates of the stove, the apex of its roof plates being a smalldistance below the range of the top plate of the oven in the front flue,and below the lower edge of the nozzle in the back flue. By thisarrangement the hot gases are kept spread over the entire surface of thetopplate, and after being turned over into the front flue are dividedfor a short time, then they partially unite below the separator and turninto the bottom flue where they unite more thoroughly and are keptspread over the whole flue, by the effect of the separator in the backflue to prevent them from tending toward the central opening through thenozzle. In this state the hot gases pass up the back flue on each sideof the separator, converge above it, and pass through the nozzle intothe chimney.

The draft of the furnace is supplied to the ash pit through anair-passage S which passes through the separator in the rear flue to theash pit under the grate.

In parlor stoves where the entire oven is under the furnace, the airpassage is made through either the front or rear separator.

What I claim as my invention and desire to secure by Letters Patent is-The placing the separators a and b in the front and back descending andascending flues of a cooking stove to divide the products of combustionwhile they are permitted to pass undivided over the top and under thebottom plates of the oven substantially as described in the abovespecification.

R. J. BLANCHARD.

Witnesses:

RICHARD VARICK DE Wrr'r, T. W. GHERT.

